Outcomes | Control (n=259) | Intervention (n=256) | P value |

Quality of bowel cleansing | |||

Total BBPS score, median (IQR) | 7 (7–8) | 7.5 (7–8) | 0.02* |

Poor cleansing (total BBPS<6), n (%) | 20 (7.7) | 19 (7.4) | 0.90† |

Polyp detection rate, % | 23.2 | 23.4 | 0.94† |

Adenoma detection rate, % | 8.9 | 9.0 | 0.97† |

Bold values are statistically significant.

*t-test.

†Pearson’s χ

^{2}test.BBPS, Boston Bowel Preparation Scale.